3M Purification Inc.
Omnipure
Osmio Solutions Ltd.
OptiPure
Selecto
WaterCare Ltd.
Pentair Inc. (Everpure)
Brita GmbH
Best Water Technology
Fairey (Doulton)
Midea
Ozner
Litree
Qinyuan Group. Co. Ltd
Canature
Kinetico
APEC Water Systems